Sequoia / Tahoe Series User Manual California Instruments
M447352-01 REV-A 227
Figure 5-235. HARMONICS Menu
The HARMONICS menu has the following fields:
Entry Description
FUNCTION HARMONICS menu: Selects Voltage or Current for display.
VIEW HARMONICS menu: Selects display modes, as follows:
Table: Displays the first 50 harmonics (bandwidth limited) in a
tabular text format, shown below.
Bar: Displays the first 50 harmonics (bandwidth limited) in a
graphical bar chart display, shown below.
DATA HARMONICS menu: Selects absolute or relative harmonics
display for TABLE and BAR view modes. In relative mode, all
harmonics are shown in a percentage of the fundamental which
is normalized at 100%. In absolute mode, the harmonic
amplitudes are shown in absolute volts or amperes.
MODE HARMONICS menu: Selects the trigger mode for the acquisition,
as follows:
SINGLE: Single-shot acquisition; in this mode, the acquisition is
triggered once each time the START field is selected. The
selected trigger source is used to determine the trigger point.
Once the acquisition has been triggered, the data are displayed
and do not change until the next acquisition is triggered. This
mode is most appropriate for single-shot events, such as startup
currents.
CONTINUE Continuous acquisition; in this mode, acquisitions
occur repeatedly, and the data is updated on screen after each
trigger occurrence. This provides a continuous update of the data
and is most appropriate for repetitive signals.
SOURCE HARMONICS menu: Selects the event that will trigger a
measurement acquisition, as follows.
IMMEDIATE: Causes the acquisition to trigger immediately when
the START field is selected. This is an asynchronous trigger
event. The acquisition will always be triggered in this mode and
data is available immediately.
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